docs: def hugepage_support(user, group='hugetlb', nr_hugepages=256,
                       max_map_count=65536, mnt_point='/run/hugepages/kvm',
                       pagesize='2MB', mount=True, set_shmmax=False):
      """Enable hugepages on system.
  
      Args:
      user (str)  -- Username to allow access to hugepages to
      group (str) -- Group name to own hugepages
      nr_hugepages (int) -- Number of pages to reserve
      max_map_count (int) -- Number of Virtual Memory Areas a process can own
      mnt_point (str) -- Directory to mount hugepages on
      pagesize (str) -- Size of hugepages
      mount (bool) -- Whether to Mount hugepages
      """
      group_info = add_group(group)
      gid = group_info.gr_gid
      add_user_to_group(user, group)
      if max_map_count < 2 * nr_hugepages:
          max_map_count = 2 * nr_hugepages
      sysctl_settings = {
          'vm.nr_hugepages': nr_hugepages,
          'vm.max_map_count': max_map_count,
          'vm.hugetlb_shm_group': gid,
      }
      if set_shmmax:
          shmmax_current = int(check_output(['sysctl', '-n', 'kernel.shmmax']))
          shmmax_minsize = bytes_from_string(pagesize) * nr_hugepages
          if shmmax_minsize > shmmax_current:
              sysctl_settings['kernel.shmmax'] = shmmax_minsize
      sysctl.create(yaml.dump(sysctl_settings), '/etc/sysctl.d/10-hugepage.conf')
      mkdir(mnt_point, owner='root', group='root', perms=0o755, force=False)
      lfstab = fstab.Fstab()
      fstab_entry = lfstab.get_entry_by_attr('mountpoint', mnt_point)
      if fstab_entry:
          lfstab.remove_entry(fstab_entry)
      entry = lfstab.Entry('nodev', mnt_point, 'hugetlbfs',
                           'mode=1770,gid={},pagesize={}'.format(gid, pagesize), 0, 0)
      lfstab.add_entry(entry)
      if mount:
          fstab_mount(mnt_point)